Novel poly(3-hydroxybutyrate) nanocomposites containing WS2 inorganic nanotubes with improved thermal, mechanical and tribological properties

Naffakh Cherradi Hadi, Mohammed; Marco, Carlos; Ellis, Gary J.; Cohen, Sidney R.; Laikhtman, Alexander; Rapoport, Lev y Zak, Alla (2014). Novel poly(3-hydroxybutyrate) nanocomposites containing WS2 inorganic nanotubes with improved thermal, mechanical and tribological properties. "Materials Chemistry and Physics", v. 147 (n. 1-2); pp. 273-284. ISSN 0254-0584. https://doi.org/10.1016/j.matchemphys.2014.04.040.

Descripción

Título: Novel poly(3-hydroxybutyrate) nanocomposites containing WS2 inorganic nanotubes with improved thermal, mechanical and tribological properties
Autor/es:
  • Naffakh Cherradi Hadi, Mohammed
  • Marco, Carlos
  • Ellis, Gary J.
  • Cohen, Sidney R.
  • Laikhtman, Alexander
  • Rapoport, Lev
  • Zak, Alla
Tipo de Documento: Artículo
Título de Revista/Publicación: Materials Chemistry and Physics
Fecha: 15 Septiembre 2014
Volumen: 147
Materias:
Palabras Clave Informales: Composite materials; Nanostructures; Thermal properties; Mechanical properties; Tribology
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Física Aplicada e Ingeniería de Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Poly(3-hydroxybutyrate) (PHB) nanocomposites containing environmentally-friendly tungsten disulphide inorganic nanotubes (INTeWS2) have been successfully prepared by a simple solution blending method. The dynamic and isothermal crystallization studies by differential scanning calorimetry (DSC) demonstrated that the INTeWS2 exhibits much more prominent nucleation activity on the crystallization of PHB than specific nucleating agents or other nanoscale fillers. Both crystallization rate and crystallinity significantly increase in the nanocomposites compared to neat PHB. These changes occur without modifying the crystalline structure of PHB in the nanocomposites, as shown by wide-angle X-ray diffraction (WAXS) and infrared/Raman spectroscopy. Other parameters such as the Avrami exponent, the equilibrium melting temperature, global rate constant and the fold surface free energy of PHB chains in the nanocomposites were obtained from the calorimetric data in order to determine the influence of the INTeWS2 filler. The addition of INTeWS2 remarkably influences the energetics and kinetics of nucleation and growth of PHB, reducing the fold surface free energy by up to 20%. Furthermore, these nanocomposites also show an improvement in both tribological and mechanical (hardness and modulus) properties with respect to pure PHB evidenced by friction and nanoindentation tests, which is of important potential interest for industrial and medical applications.

Proyectos asociados

TipoCódigoAcrónimoResponsableTítulo
Gobierno de EspañaMAT-2010-21070-C02-01MINECOSin especificarSin especificar

Más información

ID de Registro: 37462
Identificador DC: http://oa.upm.es/37462/
Identificador OAI: oai:oa.upm.es:37462
Identificador DOI: 10.1016/j.matchemphys.2014.04.040
URL Oficial: http://www.sciencedirect.com/science/article/pii/S025405841400296X
Depositado por: Memoria Investigacion
Depositado el: 10 Feb 2016 17:30
Ultima Modificación: 15 Sep 2016 22:30
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